1{
 2  den.default.nixos = {pkgs, ...}: {
 3    nixpkgs.overlays = [
 4      (final: prev: {
 5        inherit
 6          (prev.lixPackageSets.stable)
 7          nixpkgs-review
 8          nix-eval-jobs
 9          nix-fast-build
10          colmena
11          ;
12      })
13    ];
14
15    nix.package = pkgs.lixPackageSets.stable.lix;
16  };
17}